Results are out! Find what you need...fast. Get quick advice or join the chat
Hey! Sign in to get help with your study questionsNew here? Join for free to post

AQA GCSE PHYSICS UNIT 2 PHY2H January 2012 Unofficial mark scheme

Announcements Posted on
Become part of the Welcome Squad! Apply here! 28-10-2014
    • 0 followers
    Offline

    ReputationRep:
    will i get a mark if i sai the same type of polystyrene beads for 1) a)ii???
    • 0 followers
    Offline

    ReputationRep:
    (Original post by WM1996)
    Will I get any marks for these? D:
    1)a)ii - I put size of beads (instead of the suggested 'volume').
    1)c)i) - Could you say spray ionised air over the beads as they come out of the pipe? I saw that somewhere in a past paper to neutralise the charge :/
    3)a)ii) I put weather conditions, because its hard for the person to see when to break (lets say for example there is a rainstorm) as well as friction is reduced, thus increasing braking distance.

    Thanks.
    You wouldn't get a mark for the size of beads because that was an independant variable
    • Thread Starter
    • 4 followers
    Offline

    ReputationRep:
    (Original post by WM1996)
    Will I get any marks for these? D:
    1)a)ii - I put size of beads (instead of the suggested 'volume').
    1)c)i) - Could you say spray ionised air over the beads as they come out of the pipe? I saw that somewhere in a past paper to neutralise the charge :/
    3)a)ii) I put weather conditions, because its hard for the person to see when to break (lets say for example there is a rainstorm) as well as friction is reduced, thus increasing braking distance.

    Thanks.
    a) ii) Doubt you will get the mark as that was the independent variable !
    ii) It would be too late to spray them when they are coming out of the pipe- they could spark whilst in it!
    3a)ii) Doubt that would be accepted as thinking distance starts from the moment the driver sees the obstacle whether its later or not
    • Thread Starter
    • 4 followers
    Offline

    ReputationRep:
    (Original post by nevarsan)
    will i get a mark if i sai the same type of polystyrene beads for 1) a)ii???
    Yep
    • 0 followers
    Offline

    ReputationRep:
    I reckon (due to confusion on the wording of the questions - as usual) it will go as follows:
    36 - 100 UMS
    33 - A*
    29 - A
    23 - B
    19 - C
    • 0 followers
    Offline

    ReputationRep:
    (Original post by WM1996)
    Will I get any marks for these? D:
    1)a)ii - I put size of beads (instead of the suggested 'volume').
    1)c)i) - Could you say spray ionised air over the beads as they come out of the pipe? I saw that somewhere in a past paper to neutralise the charge :/
    3)a)ii) I put weather conditions, because its hard for the person to see when to break (lets say for example there is a rainstorm) as well as friction is reduced, thus increasing braking distance.

    Thanks.
    1 you definitely got wrong, size of beads isnt a control variable
    2 you got this one right, thats a valid way to do it
    3 im pretty sure the only answer here will be speed unfortunately, because although weather affects both, no areas of weather affect it the same, eg, a rainstorm would affect breaking distance because of wet roads, but affect how you see by blocking vision due to rain
    • Thread Starter
    • 4 followers
    Offline

    ReputationRep:
    (Original post by lucymcgonigle)
    2biii: would it be correct of you put the same atomic number?

    3cii: What was the question, i out 4 too but what was the question?

    4a: what was the question?

    4b: what was the question?

    Appreciated if anyone can remember!
    2biii Maybe but it specifically says stays the same in the nucleus, so possibly not.
    3ciii) Acceleration from v-t graph
    4a) Find pd when current is 0.8A and resistance is 2.5ohms
    b) How much energy id transferred by the lamp in the above circuit when charge was 72 coulombs.
    • Thread Starter
    • 4 followers
    Offline

    ReputationRep:
    (Original post by WM1996)
    I reckon (due to confusion on the wording of the questions - as usual) it will go as follows:
    36 - 100 UMS
    33 - A*
    29 - A
    23 - B
    19 - C
    Well for a start that is impossible Did you know that if the difference from A to A* is 4 then the difference from A* to 100UMS will also be 4- test it out on aqa ums converter! So 100UMS would be 37/45
    • 10 followers
    Offline

    ReputationRep:
    (Original post by metaltron)
    b) 9.6 kgm/s (2)
    ii) 9600N (1)
    iii) Increases time catching the ball, decreasing the rate of change of momentum, reducing the force on the fielder’s hand. (2)

    Please positive rating thanks
    Why was this 9.6 kgm/s? I also got 4.8 kgm/s because if you do mass x velocity (0.16 kg x 30 m/s) = 4.8 ?
    • 1 follower
    Offline

    ReputationRep:
    would i get a mark if i wrote the amount of bead instead of volume? i was lost for word
    • 0 followers
    Offline

    ReputationRep:
    (Original post by metaltron)
    2biii Maybe but it specifically says stays the same in the nucleus, so possibly not.
    3ciii) Acceleration from v-t graph
    4a) Find pd when current is 0.8A and resistance is 2.5ohms
    b) How much energy id transferred by the lamp in the above circuit when charge was 72 coulombs.
    i originally put number of protons, but then i got confused on whether it was protons or neutrons, so changed it to atomic number to be safe :/

    and thanks!
    • Thread Starter
    • 4 followers
    Offline

    ReputationRep:
    (Original post by Subhaan120)
    would i get a mark if i wrote the amount of bead instead of volume? i was lost for word
    Probably, as long as bead was in the singular then that's fine. Otherwise you could be suggesting the number of beads was the same
    • 0 followers
    Offline

    ReputationRep:
    I got 144j for the energy transformed? I did 2v * 72C?
    • 0 followers
    Offline

    ReputationRep:
    was the size of the pipe a controlled variable?
    • 0 followers
    Offline

    ReputationRep:
    (Original post by USB)
    Oh no it doesn't...

    I have a feeling this mark scheme isn't very accurate...
    it does. look in you revision guide
    • 0 followers
    Offline

    ReputationRep:
    Roughly, I think i've got between 30-36, not sure exactly

    i know boundaries vary, but what grade?
    • 1 follower
    Offline

    ReputationRep:
    (Original post by PoorLoser)
    what if i wrote amount of beads for the 1aii?

    for 6 i got 4.8kgm/s and after that i got 4800N :/
    same
    • 0 followers
    Offline

    ReputationRep:
    I think 144j is wrong - it was 72C x 1.5v
    • 1 follower
    Offline

    ReputationRep:
    WTH...i got 4.8 would i getr the mark
    • 0 followers
    Offline

    ReputationRep:
    (Original post by Subhaan120)
    WTH...i got 4.8 would i getr the mark
    I got that too

Reply

Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: October 8, 2012
New on TSR

Halloween 2014

Join the TSR Halloween party...if you dare!

Article updates
Reputation gems:
You get these gems as you gain rep from other members for making good contributions and giving helpful advice.